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WorksheetsEM Spectrum, Bohr Models, Valence Electrons, Energy Rings
Total questions: 102
Worksheet time: 1hrs 23mins
As wavelength increases, frequency ___________.
increases
decreases
stays the same
unknown
As frequency increases, energy ________.
increases
decreases
stays the same
unknown
What happens to frequency when wavelength decreases?
stays the same
decreases
increases
There is no relationship between wavelength & frequency.
Color with the highest frequency
Red
Yellow
Blue
Violet
Color with the longest wavelength
Red
Yellow
Blue
Violet
Which EM waves have the longest wavelength?
radio
x-rays
ultraviolet
gamma rays
Which EM waves have the shortest wavelength?
radio
x-rays
ultraviolet
gamma rays
What happens to energy as an atom goes from ground state to excited state?
It increases
It decreases
It remains the same
What is the maximum number of electrons allowed in the second shell?
1
2
8
3
What happens when an electron gains energy?
The electron goes to an excited state, and electrons move to an outer shell
The electron goes to an excited state, and electrons move to an inner shell
The electron goes to the ground state, and electrons move to an outer shell
The electron goes to the ground state, and electrons move to an inner shell
What happens when an electron releases energy?
The electron goes to an excited state, and electrons move to an outer shell
The electron goes to an excited state, and electrons move to an inner shell
The electron goes to the ground state, and electrons move to an outer shell
The electron goes to the ground state, and electrons move to an inner shell
A
B
C
D
A
B
C
D
A
B
C
D
As an electron in an atom moves from the ground state to the excited state, the electron
gains energy as it moves to a higher energy level
gains energy as it moves to a lower energy level
loses energy as it moves to a higher energy level
loses energy as it moves to a lower energy level
An electron in an atom moves from the ground state to an excited state when the energy of the electron
decreases
increases
remains the same
Flame tests are most useful for
blood testing
watching fireworks
identification of elements
none of the above
The color of emitted light with the SHORTEST wavelength is
violet
green
red
indigo
The electron moves from position 1 to 2. How does the state of the electron shift during this reaction?
The electron becomes less excited.
The electron returns to the ground state.
The electron becomes more excited.
Light is emitted
Light is emitted when electrons ...
return from high energy state to low energy state
jump from low energy state to high energy state
either of these
none of these
When atoms _____________ energy, their electrons move to higher energy levels. These electrons _____________ energy by emitting light when they return to lower energy levels.
lose, absorb
absorb, lose
lose, lose
absorb, absorb
If an electron moves from n=4 to n=2 it ____
absorbs energy
releases energy
The lowest energy configurations for electrons in an atom is called the
neutral state
home state
ground state
base state
How many protons does this element have?
20
40
8
2
How many electrons does this element have?
11
23
12
1
How many neutrons does this element have?
45
80
35
7
How many valence electrons does this element have?
17
35
13
7
How many electrons on the 2nd energy level does this element have?
20
40
8
2
How many valence electrons does this element have?
11
23
12
1
How many subatomic particles does does this element have in the nucleus?
45
80
35
7
What element does this bohr model represent?
Si
S
Ni
H
What element does this bohr model represent?
Si
S
Ni
H
Which Bohr model represents Be?
What atom does this Bohr Model represent?
(a)
How many valence (outer) electrons does an Oxygen atom have?
2
6
8
16
What is the atomic number of this element?
17
18
35
35.453
What is the mass number of this atom of Chlorine?
17
18
35
35.453
Which element is this?
Calcium
Chlorine
Silicon
Potassium
What element is this?
Nitrogen
Chlorine
Argon
Phosphorous
What element is represented in this Bohr Model?
Carbon
Hydrogen
Aluminum
Lithium
How many electrons can fit on the 1st energy level (orbital) for any Bohr Model?
2
6
8
10
On the periodic table, Periods are
Horizontal rows
Vertical columns
How many energy levels in this element?
2
5
6
3
What period is this element located in?
2
20
4
3
Which Bohr model represents Neon?
How many valence electrons does Carbon have
1
4
The elements F, Cl, and I are all in the same column on the periodic table. Which is the best explanation for this arrangement.
They have the same number of energy levels
They were all discovered at ancient times
They were all gases at room temperature
they have the same number of valence electrons
Which element is most similar to potassium (K)
argon
chlorine
phosphorus
sodium
Which of the following elements has a full outer electron shell?
Neon
Oxygen
Sodium
Chlorine
Horizontal (SIDE TO SIDE) rows on the periodic table are
groups
periods
The period number tells you the number of
protons
energy levels
valence electrons
How many energy levels does Au have? Just give me the number.
(a)
How many energy levels does O have? Just give me the number.
(a)
How many energy levels does Rb have? Just give me the number.
(a)
How many energy levels does He have? Just give me the number.
(a)
How many energy levels does Mg have? Just give me the number.
(a)
H and He have the same number of energy levels.
True
False
what period would this element be in?
6
8
3
16
what period would this element be in?
8
3
4
7
what period would this element be in?
2
3
4
5
what period would this element be in?
2
3
5
7
As you move from top to bottom down a group on the periodic table, the number of valence electrons ___ .
Decreases
Increases
Stays the same
As you move from left to right across a period of the periodic table, the number of valence electrons ___.
Decreases
Increases
Stays the same
As you move from top to bottom down a group on the periodic table, the number of energy levels ___.
Decreases
Increases
Stays the same
As you move from left to right across a period of the periodic table, the number of energy levels ___.
Decreases
Increases
Stays the same
Which of the following elements has the greatest amount of energy levels?
Boron
Gallium
Thallium
They have the same number of energy levels.
This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?
3
4
5
How many valence electrons does Tin (Sn) have?
8
7
5
4
How many valence electrons does Lithium (Li) have?
8
1
5
2
How many valence electrons does Bromine (Br) have?
5
6
7
8
______________ electrons are found in the outermost energy level of an atom.
neutral
valence
purple
proton
How many valence electrons does Hydrogen (H) have?
1
2
3
4
How many valence electrons do Group 2 atoms have?
1
2
3
4
What does the period number tell you about an atom's electron arrangement?
number of electrons
number of valence electrons
number of electron shells
number of possible isotopes
For the highlighted group, there are _ valence electrons
(a)
For the highlighted group, there are _ valence electrons
(a)
For the highlighted group, there are _ valence electrons
(a)
For the highlighted group, there are _ valence electrons
(a)
For the highlighted group, there are _ valence electrons
(a)
For the highlighted group, there are _ valence electrons
(a)
For the highlighted group, there are _ valence electrons
(a)
For the highlighted group, there are _ valence electrons
(a)
